Digital asset manager Hashdex has taken another step in its proposal to offer a combined spot Bitcoin and Ether exchange-traded fund in the United States.

On June 24, the firm submitted an S-1 registration statement for its Hashdex Nasdaq Crypto Index US ETF, which will track certain cryptocurrency assets in the Nasdaq Crypto US Settlement Price Index — a daily closing value of the Nasdaq Crypto Index which measures the performance of a significant portion of the digital asset market.